US12285386B2 - CPR chest compression device with releasable base member - Google Patents

Abstract

A CPR device having a base member configured to be placed underneath a patient, a chest compression mechanism configured to deliver CPR chest compressions to the patient, a support leg configured to support the chest compression mechanism at a distance from the base member, a clamp mechanism coupled to the support leg, and a release mechanism coupled to the support leg and the clamp mechanism. The clamp mechanism is configured to attach the support leg to a lock component of the base member in a latch-closed configuration and to release the support leg from the lock component in a latch-open configuration. The clamp mechanism is further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impacts an external portion of the clamp mechanism without the release mechanism being pulled away from the base member.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

This application is a continuation of U.S. non-provisional patent application Ser. No. 17/507,569, filed Oct. 21, 2021, which is continuation of U.S. non-provisional patent application Ser. No. 16/168,432, filed Oct. 23, 2018 (issued Oct. 26, 2021, as U.S. Pat. No. 11,154,454), which claims the benefit of U.S. provisional patent application No. 62/576,047 filed Oct. 23, 2017, the disclosures of all of which are incorporated by reference herein in their entirety.

FIELD OF THE INVENTION

This disclosure is directed to devices and methods for CPR machines that deliver CPR chest compressions to a patient.

BACKGROUND

Cardiopulmonary resuscitation (CPR) is a medical procedure performed on patients to maintain some level of circulatory and respiratory functions when patients otherwise have limited or no circulatory and respiratory functions. CPR is generally not a procedure that restarts circulatory and respiratory functions, but can be effective to preserve enough circulatory and respiratory functions for a patient to survive until the patient's own circulatory and respiratory functions are restored. CPR typically includes frequent torso compressions that usually are performed by pushing on or around the patient's sternum while the patient is lying on the patient's back. For example, torso compressions can be performed as at a rate of about 100 compressions per minute and at a depth of about 5 cm per compression for an adult patient. The frequency and depth of compressions can vary based on a number of factors, such as valid CPR guidelines.

Mechanical CPR has several advantages over manual CPR. A person performing CPR, such as a medical first-responder, must exert considerable physical effort to maintain proper compression timing and depth. Over time, fatigue can set in and compressions can become less consistent and less effective. The person performing CPR must also divert mental attention to performing manual CPR properly and may not be able to focus on other tasks that could help the patient. For example, a person performing CPR at a rate of 100 compressions per minute would likely not be able to simultaneously prepare a defibrillator for use to attempt to correct the patient's heart rhythm. Mechanical compression devices can be used with CPR to perform compressions that would otherwise be done manually. Mechanical compression devices can provide advantages such as providing constant, proper compressions for sustained lengths of time without fatiguing, freeing medical personnel to perform other tasks besides CPR compressions, and being usable in smaller spaces than would be required by a person performing CPR compressions.

Embodiments of the disclosed technology address shortcomings in existing devices and methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG.1 is a perspective view of a CPR device, according to embodiments.

FIG.2 is a front view of the CPR device ofFIG.1, also showing a representation of a patient within the CPR device.

FIG.3 is a top view of the base plate ofFIG.1 in isolation.

FIG.4 is a perspective view of the support leg and the base member ofFIG.1 in isolation.

FIG.5 is a perspective view of the support leg and the base member ofFIG.4 with the near-side covering removed from the support leg in the drawing to show certain interior details.

FIG.6 is a front-side perspective view of the release mechanism ofFIG.5 in isolation.

FIG.7 is a rear-side perspective view of the release mechanism ofFIG.6.

FIG.8 is a front-side perspective view of the clamp mechanism ofFIG.5 in isolation.

FIG.9 is a rear-side perspective view of the clamp mechanism ofFIG.8.

FIG.10 is a sectional view showing certain details of the junction between the support leg and the base member ofFIG.5 in a latch-closed configuration, with the support leg attached to the lock component of the base member.

FIG.11 is a sectional view showing certain details of the junction between the support leg and the base member ofFIG.5 in the latch-closed configuration, with the support leg not attached to the lock component of the base member.

FIG.12 is a sectional view showing certain details of the junction between the support leg and the base member ofFIG.5 in a first intermediate position between the latch-closed configuration ofFIG.10 and the latch-open configuration ofFIG.13.

FIG.13 is a sectional view showing certain details of the junction between the support leg and the base member ofFIG.5 in a latch-open configuration.

FIG.14 is a sectional view showing certain details of the junction between the support leg and the base member ofFIG.5 in a second intermediate position between the latch-closed configuration ofFIG.10 and the latch-open configuration ofFIG.13.

DETAILED DESCRIPTION

As described herein, embodiments are directed to a cardiopulmonary resuscitation (“CPR”) device where the support leg may be always lockable to the base member. The support leg may be configured to support the chest compression mechanism away from the base member, which may be configured to be placed underneath a patient during operation of the CPR device. The support leg may also be configured to position the chest compression mechanism over the patient's chest to deliver CPR chest compressions to a patient. Prior devices may have required that a latch between the support leg and the base member, or back plate, be unlatched or reset, such as by activating a release handle, before the support leg could be locked to the base member. Since embodiments of the disclosed technology may not require that the lock or latch be reset or unlatched, such embodiments are said to be “always lockable.” This feature may make the CPR device easier to use, especially in emergency situations where there may be a therapeutic benefit to the patient if the CPR device can be quickly and properly assembled and positioned for use.

In addition, embodiments of the disclosed technology provide a mechanism for releasing the support leg from the base member by pulling the release mechanism away from the base member. Prior devices may have required that a release mechanism attached to the support leg be activated toward the patient to release the support leg from the base member. But such prior mechanisms may not be operable when, for example, the patient's body prevents or limits movement of the release mechanism, potentially preventing the support leg from being released from the base member. Embodiments of the disclosed technology, by contrast, may not require additional clearance between the patient and the support leg to operate the release mechanism.

Furthermore, in embodiments of the disclosed technology, the clamp mechanism may be configured to deflect in a direction toward a middle portion of the base member to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration. Prior devices may have required that a clamp mechanism or latch be deflected in an outward direction, away from the middle portion of the base member. But such prior mechanisms may not be operable when, for example, objects that are very close to the CPR device prevent or limit movement of the clamp mechanism or latch, potentially preventing the support leg from being released from the base member. Such close objects might include a gurney, medical equipment such as an x-ray machine, or medical supplies such as first-responder gear placed next to the CPR device. Embodiments of the disclosed technology, by contrast, may not require additional clearance around the CPR device to operate the clamp mechanism.

FIG.1 is a perspective view showing portions of aCPR device100, according to embodiments.FIG.2 is a front view of theCPR device100 ofFIG.1, also showing a representation of apatient101 within theCPR device100. As illustrated inFIGS.1 and2, aCPR device100 may include abase member102, achest compression mechanism103, and asupport leg104.

Thechest compression mechanism103 may be configured to deliver CPR chest compressions to thepatient101. Thechest compression mechanism103 may include, for example, a motor-drivenpiston135 configured to contact the patient's chest to provide the CPR chest compressions.

Thesupport leg104 may be configured to support thechest compression mechanism103 at a distance from thebase member102. For example, if thebase member102 is underneath thepatient101, who is lying on the patient's back, then thesupport leg104 may support thechest compression mechanism103 at a sufficient distance over thebase member102 to allow thepatient101 to lay within a space between thebase member102 and thechest compression mechanism103, while positioning thechest compression mechanism103 over the patient's chest.

In embodiments, there may be twosupport legs104. In embodiments, the twosupport legs104 may together form an arch to support thechest compression mechanism103. An example of such a configuration is illustrated inFIGS.1-2.

FIG.3 is a top view of thebase member102 ofFIG.1 in isolation. Thebase member102 may be configured to be placed underneath thepatient101, for example when thepatient101 is lying on the patient's back. As illustrated inFIG.3, thebase member102 may include alock component105. Thelock component105 may include, for example, arod106 that is attached to thebase member102 at twoends107 of therod106. A clamp mechanism108 (described below) may attach to amiddle portion109 of therod106 that is between the two ends107 of therod106. As illustrated inFIG.3, thelock component105 may be at afirst end110 of thebase member102, which is opposite asecond end111 of thebase member102. Thus, a direction from thefirst end110 of thebase member102 toward amiddle portion112 of the base member102 (used below to describe the function of the clamp mechanism108), may be as indicated by thearrow113 inFIG.3. Themiddle portion112 of thebase member102 is between thefirst end110 of thebase member102 and thesecond end111 of thebase member102.

FIG.4 is a perspective view of thesupport leg104 and thebase member102 ofFIG.1 in isolation.FIG.5 is a perspective view of thesupport leg104 and thebase member102 ofFIG.4 with the near-side covering136 (seeFIG.4) of thesupport leg104 removed from the drawing to show certain interior details. As illustrated inFIGS.4 and5, theclamp mechanism108 may be coupled to thesupport leg104, and arelease mechanism114 may be coupled to thesupport leg104 and theclamp mechanism108.

Theclamp mechanism108 may be configured to attach thesupport leg104 to thelock component105 of thebase member102 in a latch-closed configuration of theclamp mechanism108 and to release thesupport leg104 from thelock component105 in a latch-open configuration of theclamp mechanism108. To transition theclamp mechanism108 from the latch-closed configuration to the latch-open configuration, theclamp mechanism108 may be configured, for example, to deflect in thedirection113 toward themiddle portion112 of thebase member102. An example of this deflection is shown inFIGS.12-14.

Theclamp mechanism108 may further be configured to transition from the latch-closed configuration to the latch-open configuration when thelock component105 of thebase member102 impinges upon an external portion116 (seeFIGS.8 and9) of theclamp mechanism108. For example, theexternal portion116 of theclamp mechanism108 may be shaped and dimensioned to be displaced when theexternal portion116 of theclamp mechanism108 impacts thelock component105 of thebase member102. This feature, which is discussed in more detail below, may provide an “always lockable” capability. In other words, the clamping mechanism need not be reset or unclamped by activating therelease mechanism114 before the clamping mechanism attaches thesupport leg104 to thebase member102.

Therelease mechanism114 may be configured to be pulled away from thebase member102 to transition theclamp mechanism108 from the latch-closed configuration to the latch-open configuration. In this context, “pulled away” means pulled in a direction away from thebase member102. For example, if thebase member102 is resting on the ground or another flat surface, then therelease mechanism114 may be pulled up, away from the ground. Here, “up” is used for convenience and in reference to the views provided in the figures. TheCPR device100, however, may have a number of orientations in actual use. Thus, a feature that is “up” in the figures may not have that same orientation or direction in actual use.

FIG.6 is a front-side perspective view of therelease mechanism114 ofFIG.5 in isolation.FIG.7 is a rear-side perspective view of therelease mechanism114 ofFIG.6. As illustrated inFIGS.6 and7, therelease mechanism114 may include apull ring115 and awedge portion117 connected by alink portion118. Thelink portion118 may include aspring tab119 and a limitingslot120.

Thewedge portion117 of therelease mechanism114 includes aninclined surface121 that is configured to interact with awedge portion122 of theclamp mechanism108. For example, when therelease mechanism114 is moving away from thebase member102, thewedge portion117 of therelease mechanism114 may push thewedge portion122 of theclamp mechanism108 in thedirection113 toward themiddle portion112 of thebase member102.

Thespring tab119 may extend from thelink portion118 of therelease mechanism114. Thespring tab119 may be configured to bias therelease mechanism114 toward thebase member102. For example thespring tab119 may be configured to contact a projection123 (seeFIG.5) of thesupport leg104 and, when therelease mechanism114 is pulled away from thebase member102, impart a counterforce to therelease mechanism114. Thus, when therelease mechanism114 is not pulled away from thebase member102, therelease mechanism114 is biased toward thebase member102. In embodiments, there may be a pair ofspring tabs119, such as illustrated inFIGS.6 and7. In such embodiments, the pair ofspring tabs119 may be symmetrical about thelink portion118 of therelease mechanism114.

The limitingslot120 may be configured to interact with a protrusion124 (seeFIG.5) extending from thesupport leg104 to limit motion of therelease mechanism114 toward and away from thebase member102. In embodiments, there may be a two or more limitingslots120, such as illustrated inFIGS.6 and7.

Thepull ring115 of therelease mechanism114 may be configured to be pulled away from thebase member102. In some embodiments, thepull ring115 may be pulled in a direction substantially parallel to thesupport leg104. As used in this disclosure, “substantially parallel” means largely or essentially following the profile of thesupport leg104, without requiring perfect parallelism. For embodiments havingarched support legs104, “substantially parallel” also includes largely or essentially tangential to the profile of thesupport leg104. Thepull ring115 may be disposed, for example, near a handle125 (seeFIGS.1 and2) of thesupport leg104, allowing a user to activate thepull ring115 while grasping thehandle125.

FIG.8 is a front-side perspective view of theclamp mechanism108 ofFIG.5 in isolation.FIG.9 is a rear-side perspective view of theclamp mechanism108 ofFIG.8. As illustrated inFIGS.8 and9, theclamp mechanism108 may include apivot126, aspring seat127, theexternal portion116 of theclamp mechanism108, and a securingchannel128.

Theclamp mechanism108 may be pivotally connected to thesupport leg104 by, for example, thepivot126. Therelease mechanism114 may be coupled to theclamp mechanism108 by a sliding engagement between thewedge portion117 of therelease mechanism114 and thewedge portion122 of theclamp mechanism108. Thewedge portion122 of theclamp mechanism108 may include aninclined surface129 that is configured to interact with theinclined surface121 of thewedge portion117 of therelease mechanism114. (See alsoFIG.10.)

Abias element130 may be configured to apply a force to theclamp mechanism108 to bias theclamp mechanism108 in the latch-closed configuration. Thebias element130 may be, for example, a spring tab extending from theclamp mechanism108, such as shown inFIGS.8 and10. For example, thespring tab130 may be configured to contact the support leg (such as an inside surface of the near-side covering136 that is removed fromFIGS.5 and10-14). And, when theclamp mechanism108 is rotated counterclockwise about the pivot126 (seeFIG.12), thespring tab130 may be configured to impart a counterforce to theclamp mechanism108. Thus, when theclamp mechanism108 is biased toward the latch-closed configuration.

Alternatively, thebias element130 may be, for example, a spring, such as a helical compression spring. Thebias element130 may be coupled to theclamp mechanism108, and the coupling may be, for example, through thespring seat127. Thus, for example, a helical compression spring may be disposed over thespring seat127 such that the spring and thespring seat127 are coaxial. Thebias element130 may also be coupled to thesupport leg104. Thebias element130 may be, as another example, a torsion spring at thepivot126, the torsion spring applying a force between theclamp mechanism108 and thesupport leg104.

As noted above, theexternal portion116 of theclamp mechanism108 may be shaped and dimensioned to be displaced when theexternal portion116 of theclamp mechanism108 impacts thelock component105 of thebase member102. Theexternal portion116 of theclamp mechanism108 may include, for example, an inclined surface131 (such as illustrated inFIG.10), configured to contact thelock component105 during assembly of theCPR device100.

The securingchannel128 of theclamp mechanism108 may be configured to accept thelock component105, such as, for example, themiddle portion109 of therod106. In embodiments, the securingchannel128 may be configured to at least partially surround thelock component105.

In embodiments, thesupport leg104, thebase member102, theclamp mechanism108, and therelease mechanism114 may be made substantially of a radio-translucent material. Radio-translucent materials are translucent in x-rays and other radiographic images, allowing other features to be viewed through the radio-translucent material. As used in this disclosure, “made substantially of a radio-translucent material” means largely or essentially made of a radio-translucent material, without requiring every feature to be so made. For example, fasteners and springs may be metallic and, therefore, not radio-translucent. Radio-translucent materials may be beneficial, for example, when theCPR device100 is used in a catheterization laboratory or other clinical situation where proper treatment requires that CPR be continued while thepatient101 is subjected to radiographic imaging.

FIG.10 is a sectional view showing certain details of the junction between thesupport leg104 and thebase member102 ofFIG.5 in a latch-closed configuration, with thesupport leg104 attached to thelock component105 of thebase member102. As noted above, theclamp mechanism108 may be pivotally connected to thesupport leg104. For the view shown inFIG.10, this means that theclamp mechanism108 may be pivoting clockwise and counterclockwise about thepivot126, such as indicated by thearrow132 inFIG.10. Accordingly, for the embodiment illustrated inFIG.10, in the latch-closed configuration theclamp mechanism108 is pivoted as far clockwise as it will travel, being prevented from further clockwise travel by theclamp mechanism108 contacting therelease mechanism114 or thesupport leg104, or both.

Here, “clockwise” and “counterclockwise” are used for convenience and in reference to the views provided in the figures. TheCPR device100, however, may have a number of orientations in actual use. Thus, a feature that is clockwise or counterclockwise in the figures may not have that same direction in actual use.

As illustrated inFIG.10, therod106 is within the securingchannel128 of theclamp mechanism108 and within a receivingchannel133 of thesupport leg104. Thus, thesupport leg104 may be attached to thelock component105 of thebase member102. The receivingchannel133 of thesupport leg104 may be configured to accept thelock component105, such as, for example, themiddle portion109 of therod106. In embodiments, the receivingchannel133 may be configured to at least partially surround thelock component105.

Additionally, the latch-closed configuration does not require that thelock component105 be in the securingchannel128 of theclamp mechanism108. In other words, thelock component105 of thebase member102 need not be attached to thesupport leg104 in the latch-closed configuration. Accordingly,FIG.11 is a sectional view showing certain details of the junction between thesupport leg104 and thebase member102 ofFIG.5 also in the latch-closed configuration, with the support leg not attached to the lock component of the base member. As illustrated inFIG.11, thelock component105 of thebase member102 is not within the securingchannel128 of theclamp mechanism108 or the receivingchannel133 of thesupport leg104. Hence,FIG.11 is an example of the “always lockable” position.

FIG.12 is a sectional view showing certain details of the junction between thesupport leg104 and thebase member102 ofFIG.5 in a first intermediate position between the latch-closed configuration ofFIG.10 and the latch-open configuration ofFIG.13. As illustrated inFIG.12, therod106 of thelock component105 may be in contact with theexternal portion116 of theclamp mechanism108. The contact may cause therod106 to apply a force to theclamp mechanism108, causing theclamp mechanism108 to rotate counterclockwise about thepivot126 from the perspective shown inFIG.12. The pivoting causes agap134 to widen between theclamp mechanism108 and thesupport leg104.

FIG.13 is a sectional view showing certain details of the junction between thesupport leg104 and thebase member102 ofFIG.5 in a latch-open configuration. As illustrated inFIG.13 the force applied to theclamp mechanism108 by therod106 has caused theclamp mechanism108 to rotate counterclockwise further than what is shown inFIG.12. The counterclockwise rotation about thepivot126 is sufficient to allow thegap134 to widen enough for therod106 to enter the receivingchannel133 of thesupport leg104. Thus,FIG.13 is an example of the latch-open configuration: the receivingchannel133 is open to receive therod106.

FIG.14 is a sectional view showing certain details of the junction between thesupport leg104 and thebase member102 ofFIG.5 in a second intermediate position between the latch-closed configuration ofFIG.10 and the latch-open configuration ofFIG.13. As illustrated inFIG.14, therod106 has begun to enter the receivingchannel133 of thesupport leg104. As a result, theclamp mechanism108 begins to rotate clockwise about thepivot126 toward the latch-closed configuration ofFIG.10.

Examples

Illustrative examples of the disclosed technologies are provided below. An embodiment of the technologies may include one or more, and any combination of, the examples described below.

Example 1 includes a cardiopulmonary resuscitation (“CPR”) device, comprising: a base member configured to be placed underneath a patient; a chest compression mechanism configured to deliver CPR chest compressions to a patient; a support leg configured to support the chest compression mechanism at a distance from the base member; a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism, the clamp mechanism further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impinges upon an external portion of the clamp mechanism; and a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration.

Example 2 includes the CPR device of Example 1, in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

Example 3 includes the CPR device of any of Examples 1-2, in which the lock component is at a first end of the base member, the first end of the base member being opposite a second end of the base member, and in which, to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the clamp mechanism is configured to deflect in a direction toward a middle portion of the base member, the middle portion of the base member being between the first end of the base member and the second end of the base member.

Example 4 includes the CPR device of any of Examples 1-3, in which the release mechanism comprises a pull ring configured to be pulled away from the base member.

Example 5 includes the CPR device of any of Examples 1-4, in which the base member, the support leg, the clamp mechanism, and the release mechanism are made substantially of a radio-translucent material.

Example 6 includes the CPR device of any of Examples 1-5, in which the clamp mechanism is pivotally connected to the support leg, and in which the release mechanism is coupled to the clamp mechanism by a wedge portion of the release mechanism in sliding engagement with a wedge portion of the clamp mechanism.

Example 7 includes the CPR device of Example 6, in which the release mechanism comprises: a pull ring configured to be pulled away from the base member; and a link portion connecting the pull ring to the wedge portion of the release mechanism, the link portion further comprising a spring tab extending from the link portion, the spring tab configured to contact the support leg and bias the release mechanism toward the base member.

Example 8 includes the CPR device of Example 7, in which the link portion further comprises a limiting slot, the limiting slot configured to interact with a protrusion extending from the support leg to limit motion of the release mechanism toward and away from the base member.

Example 9 includes the CPR device of any of Examples 1-8, further comprising a bias element configured to apply a force to the clamp mechanism to bias the clamp mechanism in the latch-closed configuration.

Example 10 includes a cardiopulmonary resuscitation (“CPR”) device, comprising: a base member configured to be placed underneath a patient; a chest compression mechanism configured to deliver CPR chest compressions to a patient; a support leg configured to support the chest compression mechanism at a distance from the base member; and a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism, the clamp mechanism further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impinges upon an external portion of the clamp mechanism, the lock component comprising a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

Example 11 includes the CPR device of Example 10, in which the lock component is at a first end of the base member, the first end of the base member being opposite a second end of the base member, and in which, to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the clamp mechanism is configured to deflect in a direction toward a middle portion of the base member, the middle portion of the base member being between the first end of the base member and the second end of the base member.

Example 12 includes the CPR device of any of Examples 10-11, further comprising a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration.

Example 13 includes the CPR device of Example 12, in which the release mechanism comprises a pull ring configured to be pulled away from the base member.

Example 14 includes the CPR device of any of Examples 2 and 10-13, in which the clamp mechanism comprises a securing channel configured to accept the middle portion of the rod, and the support leg comprises a receiving channel configured to accept the middle portion of the rod, in which the middle portion of the rod is within the securing channel and within the receiving channel when the support leg is attached to the lock component of the base member.

Example 15 includes a cardiopulmonary resuscitation (“CPR”) device, comprising: a base member configured to be placed underneath a patient; a chest compression mechanism configured to deliver CPR chest compressions to a patient; a support leg configured to support the chest compression mechanism at a distance from the base member; and a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component at a first end of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism, the clamp mechanism further configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impinges upon an external portion of the clamp mechanism, in which, to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the clamp mechanism is configured to deflect in a direction toward a middle portion of the base member, the middle portion of the base member being between the first end of the base member and the second end of the base member.

Example 16 includes the CPR device of Example 15, in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

Example 17 includes the CPR device of Example 16, in which the clamp mechanism comprises a securing channel configured to accept the middle portion of the rod, and the support leg comprises a receiving channel configured to accept the middle portion of the rod, in which the middle portion of the rod is within the securing channel and within the receiving channel when the support leg is attached to the lock component of the base member.

Example 18 includes the CPR device of any of Examples 15-17, further comprising a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration.

Example 19 includes the CPR device of any of Examples 15-18, in which the release mechanism comprises a pull ring configured to be pulled away from the base member.

Example 20 includes the CPR device of any of Examples 10-19, further comprising a bias element configured to apply a force to the clamp mechanism to bias the clamp mechanism in the latch-closed configuration.

The previously described versions of the disclosed subject matter have many advantages that were either described or would be apparent to a person of ordinary skill. Even so, all of these advantages or features are not required in all versions of the disclosed apparatus, systems, or methods.

Additionally, this written description makes reference to particular features. It is to be understood that the disclosure in this specification includes all possible combinations of those particular features. For example, where a particular feature is disclosed in the context of a particular aspect or embodiment, that feature can also be used, to the extent possible, in the context of other aspects and embodiments.

Also, when reference is made in this application to a method having two or more defined steps or operations, the defined steps or operations can be carried out in any order or simultaneously, unless the context excludes those possibilities.

Furthermore, the term “comprises” and its grammatical equivalents are used in this application to mean that other components, features, steps, processes, operations, etc. are optionally present. For example, an article “comprising” or “which comprises” components A, B, and C can contain only components A, B, and C, or it can contain components A, B, and C along with one or more other components.

Although specific embodiments have been illustrated and described for purposes of illustration, it will be understood that various modifications may be made without departing from the spirit and scope of the disclosure. Accordingly, the invention should not be limited except as by the appended claims.

Claims (10)

The invention claimed is:

1. A cardiopulmonary resuscitation (CPR) device, comprising:

a base member configured to be placed underneath a patient;

a chest compression mechanism configured to deliver CPR chest compressions to the patient;

a support leg configured to support the chest compression mechanism at a distance from the base member;

a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism; and

a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member and along the support leg in a direction substantially parallel to the support leg to disengage a wedge portion of the release mechanism from a wedge portion of the clamp mechanism by causing the wedge portion of the release mechanism to slidably engage the wedge portion of the clamp mechanism and to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration.

2. The CPR device ofclaim 1, in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

3. The CPR device ofclaim 1, in which the lock component is at a first end of the base member, the first end of the base member being opposite a second end of the base member, and in which, to transition the clamp mechanism from a latch-closed configuration to a latch-open configuration, the clamp mechanism is configured to deflect in a direction toward a middle portion of the base member, the middle portion of the base member being between the first end of the base member and the second end of the base member.

4. The CPR device ofclaim 1, in which the release mechanism comprises a pull ring configured to be pulled away from the base member.

5. The CPR device ofclaim 1, in which the base member, the support leg, the clamp mechanism, and the release mechanism are made substantially of a radio-translucent material.

6. The CPR device ofclaim 1, in which the clamp mechanism is pivotally connected to the support leg, and in which the release mechanism is coupled to the clamp mechanism by the wedge portion of the release mechanism in sliding engagement with the wedge portion of the clamp mechanism.

7. The CPR device ofclaim 1, further comprising a bias element configured to apply a force to the clamp mechanism to bias the clamp mechanism in the latch-closed configuration.

8. A cardiopulmonary resuscitation (CPR) device, comprising:

a base member configured to be placed underneath a patient;

a chest compression mechanism configured to deliver CPR chest compressions to the patient;

a support leg configured to support the chest compression mechanism at a distance from the base member;

a clamp mechanism coupled to the support leg and configured to attach the support leg to a lock component of the base member in a latch-closed configuration of the clamp mechanism and to release the support leg from the lock component in a latch-open configuration of the clamp mechanism; and

a release mechanism coupled to the support leg and the clamp mechanism and configured to be pulled away from the base member and along the support leg in a direction substantially parallel to the support leg to disengage a wedge portion of the release mechanism from a wedge portion of the clamp mechanism by causing the wedge portion of the release mechanism to slidably engage the wedge portion of the clamp mechanism and to transition the clamp mechanism from the latch-closed configuration to the latch-open configuration, the release mechanism comprising a link portion connecting a pull ring to the wedge portion of the release mechanism.

9. The CPR device ofclaim 8, in which the wedge portion of the release mechanism includes an inclined surface configured to interact with the wedge portion of the clamp mechanism.

10. The CPR device ofclaim 8, in which the lock component comprises a rod attached to the base member at two ends of the rod, the clamp mechanism attaching to a middle portion of the rod between the two ends of the rod.

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